Reamer



G. S. OLSQN Aug. 26, 1930.

u naman una n. zo, 192s INVENTOR` BusrAr SAnu-El.- EluscmA Patented Aug.v 26, 1930l UNITDSTATES .GUSTAF sAivmEL'oLso; or niiwA YORK,I 41x1-IY.

The invention relates to reamers has for its obj ect 'to provide a simple and 'elicient reamlng device4 capablefgof being easilyand.: j W l sleeve if .desired,' suitable washers 17 vmay be 4 .quickly attachedjto and" detached from die 5 stocks of-conyentional form. `A further object of the invention is lto provide a construction in whichl the reamingtool isadjustable for different sizes of reaming,v and in which said lre'ainerautomatically assumesan inoper- Y ati've position when the bore upon which vit lis operating .is properly; reamedr out. The' invention contemplates lfurther aA reamer` vin which the working pressure on the reaming tool is capablefof being'readily-- adjusted for different kinds ofA material, and :fordierene depths of reaming.y Qther objects will appear fromthe descriptionhereinafterand the j f features o-knovelty willV be pointed out in they claims.v I A l In the accompanying drawing, which illustrates" an example ofthe invention without defining its'limits, Fig.l 1is a sectional elevation of the reamer 'attached to va diefstock;

Figs. 2V and 3 are side elevations of the reamerVv itselffshowing the parts v in diierentrpositions; Fig. 4 isa section on the line 4-4 of isas'ection on the lin'e- 7 f7 `of Fig;y 1', and Fig. l l 8l is a view of acovmbinedgadjustingand inf j Y.

'i i 12,'*the tubularv memberlSfthehead 2O and the' socket member121, together with vtheir associated elements may be `termed'a carrier fon'which'the'reaming tool 24 is mounted and Y whereby `said tool may either be manipulated?''@5-` *or connected with a die stock yornianipula- )tion thereby;r In orderft'ol prevent the ream- Ying .tool`24`from rotating about itsaxis'relatively tothe head'20,l any suitable means may dicatingmember. s j i The reamer comprises an'outer hollowcasing 10,v preferably of cylindrical "form, and

Y 40' internal annular-shoulderfl with which vthe Vcasing is provided,' said vsleeve .itself being provided with an annular flangele lslidably I I s purpose offadjustingjthef position ofthe reainingv tool onjthe carrier, the socket mem- I `fittingl the casing 10, as shownin ,'Fig.`1. The sleeve 12 i`s1 'screw-threadedatits upper 45 Ven'd for the-accommodation' of aQcOllarV 15, f

l threaded stem 26 projecting upwardly' inl the j which -bears against'the endiface of the casingr 10 and 'limits thai-slidingmovements of the' sleeve 12 inl one axial. direction'- rela- -Y tively tothe casing 10. 'Ai *spring-F165surV f rounds thesleeveilQQ-within thefcasing 10 yn10untedf the tubular 'memberv 18 and is l kend .againstA the' .annularvvflangef 14; of `the 'sleeveV 12 and slidablyeguided thereinby an annularshoulder 19 with which the sleeve .i12 is provided,` said tubular member 18 at its lowerend being continuedin theformofa hollow head 'V20 -shap'ed and dimensionedtoy slidably fit-'within the'k sleeve 12, as-shown in'Fig. 1'.v A vsocket member 21 "extends axially `of the vhollow head l2O and projects intov the tubular.l member y18, said socket memrvber 21`b'eing dimensioned and shapedto slidably fit'the interior-of the tubular member t18 at kits lower end theV socket member'21is ably fits withiny the head; 20, said. socket member being further provided with an axialbore adapted to-receivethejstem-23 ofthe ream- .vided for vremovably 1connecting the ream- -7ing tool24 with the socket member 21, the illust'rated example .showing thelatter provided with a set screw 25" wherebyv this is `accomplished. rv"The outer casing 10, the sleeve beprovided as, forfinstance', making thel "interiorfofth'e head 20xand` the lflange 22 of corresponding j hexagonall i form. `For the' f ber'21 is continuedfin the lform ofa screw tubular-member 18 into screwthreaded enjgagement with'v `an vinternallythreaded cylindrical?y nue-'27 the latter "is rotatably f f formedwithan annularflange 22,: which slid- .Las

provided with an external annular flange 28, f

which bears against the upper end of said tubular member 18 and thereby prevents inward movement of the nut 27 into the same without interfering with the relative rotation of said nut. A cylindrical boss 29 projects "from the end of thek nut 27 in an axial direction through an axial fopening in a cap 30 which is threaded upon the tubular member 18 into engagement with a ring 31, falso threaded upon said member'. 18 andl1lying in surface engagement with the end of the sleeve 12 and projecting over the annular collar 15, as Vshown in Fig. 1. vThis cap 30 prevents movement of the nut y27 inAvv an outward direction. relatively to the member 18 without, however, interfering with the aforesaid` rotation of said nut fin said member.v For the .purpose of facilitating the manipulation Jof Vthe nut 27, the boss 29 is provided with openings 32 extending diametrically through the same for the accommodation of a suitable tool 33, such as shown, for instance, in Fig. 8; the boss 29 is further provided with a chanvnel 34 extending axially through the same intovcominunication with the interior yof the .nut 27, said channel permitting thetool 33 to be inserted lengthwise of the nut 27 into engagement with theend of thek stem 36. By providing the tool Vwith suitable markings 35, .designating the various positions of the ream ing ,tool.24, the extent to which said tool projects beyond the head 20 which constitutes its operativefposition maybe readily ascertained Vby simply inserting` the toolf33 through the ychannel into engagement with the end. of the i stem`26. and then `noting the designation 35 thereof'which is nearest to or( registers with the endsurface of the boss 29. 4A coil springV 36` surrounds the tubular member 18 within the sleeve12'and with `its oneend engages the head.20,.and with its other end contacts with air annular washer37 the tension of Vthe spring 36 may be varied for the purpose to be .more fully described hereinafterby means f of adjustingscrews 38 in threaded engage- .mentwith theannular flange 19 and passing 4.through suitable openings .39 formed` in the ;ringv31.` The sleeve-12, tubular. member 18, head 20, socket member 21 and associated elements which,together,y may be termed a ,core?,fare capable of. rotating asa unit withi 1n the casing 10..; In order to. permit, said rotation, 1n Vone vdirection ,and to prevent! it 'in l j the oppositedirection, a ratchet means is provided which, inthe illustratedexample, comprises'studs 40 proj ecting'outwardly from the endsurface of ythe casing4 10-in perpendicular relationithereto,said. .studs 40 being. carried ,by heads 41` slidablyniounted.; in. recesses 42y i formedfin the-:casinglandf being controlled s .by 'Ineansofv coil springs 43.tendi11gsto force f .saidlstudsoutwardly. i Thez studs; 40 .extend into recesses.,44- formed in, the `coll-ar 15,--r`sa-id s -recesses each g having i oneffend; shouldered-to prevent the collar 15 from rotatably moving beyond the studs 40 and being beveled at their other ends to permit relative rotation of said collar 15 in the other direction. With this arrangement, it is possible to rotate the casing 10* about and relatively to the axis of the reaming tool 24 and thus prevents the latter from vbeing moved in a backward direction relatively to the work and thereby prevents injury to the cutting edges of said tool. In order to prevent the cuttings resulting from the reaming operation from passing into the interior of the casing 10, a felt or other washer is fitted upon the sleeve 12 against the flange 14 thereof and is held in place in any suitable manner as by means of a locking'ring 46. The reamer further includes locking means whereby the reamer 34 is held in its operative position on the carrier, which locking means is releasable by pressure developed by the work to permit the reaming toolto be automatically shifted to an inoperative position when a predetermined point in the reaming operation is reached. In the illustrated example this locking `means comf urged inwardly by means of leaf springs or y their equivalent 49, -which are secured to the casing in any convenient manner, as by screws 50. The upperk ends of the locking levers 47 are provided with sharply defined locking shoulders 51 adaptedfto. project over thei lcollar 15 and, with inclined camming shoulders 5,2 arranged to'en'gage a correspondingly beveled surface-53 withwhich the ring 31 is provided, as shownl ini-Figs. 2

and 3. V

The reamin'g device is illustrated in aform adapting .it to ybe easily and quickly connected 'with a'vdie stock of conventionalform, -it being understood, however, that the novel features may be embodied in a reamer which -is operated otherwise than byfmeans ofl such die stock. To enable the reamer to be detachably j combined with the diestock, the lugs 11 are provided with suitable 'apertures 54 for the i accommodation of bolts 55, which correspond L v.to the bolts usuallyv found in customary die stocks, excepting that'they may be made somewhat. longerin order to permit the reamer'to'be connected with the die stock without interfering with the presence of the usualthread cuttingl die 56 therein. The latter is' additionally held-in place inthe well known way` by means o f theusual set screws 57 l which; -are `in iscrewthreaded engagement provided. The latter includes Vthe Vusual tional handles 62 practice andi'assumingthatzthefreamer f l with lugs 58 with-which the die=stock 59 is guidefGO yfor thegwork 61-and the convenby automatically disconnect the studs 40 from. t

' reaming .tool mounted on saidfcore 'to' roshown in Fig. 1ct the drawings,`the reamer is adjusted to the desired operative position on the carrier by suitably manipulating the nut 27 to screw the stein 26 into or out of said nut and to thereby adj ust the socket member 21 lengthwise ofthe cap 2O and to correspondingly move the reaming tool 24. After this setting has been accomplished,'the work 61, which, as sliowmmay be a pipe, is clamped in a vise in theusual manner and then the,V die stock guide V60 is inserted'over the endy ,thereof to cause the reaming tool to project into said pipe in the usual manner. A ma- 1 nipulation ot the die stock in the well known -nut 27 to an extentysufticientto discoi'inect,V :the stein 2.6V therefrom and to `thus lpermit way will thus cause the reaming tool 24'to be rotated about its axis and relatively to the pipe 61 and accordingly will ream outsaid pipe in the conventional Way. As the'r'eamv ing operation proceeds the pressure exerted.

by the reaming tool 24 against the pipe 61 and the counter pressure developed by the latter will'gradually force the reaming `tool V24 in a backward direction and cause the head 21, tubular member r18, andbevelle'd yring 31 to correspondingly move in the samel direction against the tension of the spring 36. As I these operations take place the bevel 53 of tlie ring 31 in co-operation with the caniming y shoulders 52 will gradually force the locking levers 47 outwardly against theJ tension of the springs 49. .Asthisfoutward movement of the levers 47 continues, the locking shoulders 51 will finally be forced out of veiigagement with the collar 15 and will thus permit the sleeve 12 to be also moved in an axial direction relatively to the casing 10 to therethe recesses 44- and thus bring the reaming tool v24 to an inoperative position on the carrier. This takes'place at the instant when the reaming operation has been completed in A a predetermined manner.- I, coincidentally with the reaming of the pipe 61 a thread is being cut thereon, this threading operation may be completed without interference from the.

reaming tool24. In any case, whenthe die stock is removed from the pipe 61 the. 'springV 16, which has been compressed during theV shifting of the reaming tool 24l to its inoperative position, will immediately restore the reaming tool, throughv the medium` of'itsasv sociated elements, to the normal operative p07 sition to which itY previously hadbeen set. In

Aorder to clearly define what is meant by the inoperative position ofthe reamingtool, it may be saidl that the aforesaid'axialmove-- ments of the parts relatively to the casing 10 disconnect the studs 40 from the ratchet r'e-f cesses 40, so thatthe casingjlOgis free to rotate relatively tothe reaming'tool 24 which,

' together with its associated elements", is held yagainst rotation by its engagement-withthe f pipe 61, sot hat theaforesaid threading operation maybe continuedto completionwith out interference. y i

. .The working; pressure onvthe reaming-tool y. i 24 mayl be; adjusted to adequately vmeet the requirements otdiiiierent kinds. of material :and lordiiierent depthsjof reaming, by sim.-l

`p'lyadjusting the; set vscrews and thereby y either bringing about Ya Vcompression or exa pansionofthe spring 36. In this way the lresistance tothe aforesaid backward .movement ofthe reaming tool is either increased or diminished andthe'backwardtravel acvlcordingly retarded orfh'astened.'y lt' removalr orreplacementmof the reaming tool 24 is desired, it is simply necessary to rotatefthe the socket member v21 V and lwith it the ream-Y any `ty'pe'of diestock'and in all cases-is capable of being easilyiand quickly combined therewith and detached.therefrom. With the reamer shown and described, the :operastionsfof reaming'o-ut an pipe; andthreading Y theY same Vexternally maybe coincidentally Icarried on without'interference'-,*one with the other. `f

Various changesv inithe speciiictorms i showni and described may 'bei made within the scopeot the claims without .departingv from vthe -spirit of 'the invention.V

kvrlf claim: imi-1 q .i

1. A reamerr comprisingmanouterv casing, a core e rotatably L mounted rin said casing, a

tate` therewith about' itsaxis, [and adjustable inthe direction of said axis relatively to said core vand .casing7 ratchet mechanismv for lixing said core and tool against rotation relatively to the casing in one direction, and for permitting said casing to relatively rotate aboutV said axis in the opposite direction toir Y v thereby prevent backward rotation of the pressure upon the work wherebysaid ratchf Vet mechanism is disconnected and said reaining tool is adjusted to an linoperative position on said casing at a predetermined point in the .reaming operation. l

2. vA reamer 'comprising anfouter casing, Y.

a core rotatablymounted insaid'casing, a

ypermitting said casing to relatively rotate about said'axis in the Vopposite direction' to vreaming toolmountedjon said core to rotate l therewithpabout its axi's,'and adjustable in '1 the direction of said axis relatively to said core andv casing, ratchety mechanism for lixt thereby prevent ybackward rotation of theV reamin tool relatively to the work, means permitting the reamingtool to be automatically shifted in an axial direction by pressure upon the kwork whereby said ratchet mechanism is disconnected and said reaming tool is adjustedto an inoperative position on said casing at a predetermined vpoint in lthe reaming operation, and adjustable means for varying the working pressure on said tool.

3. A reamer comprising an outer casing adapted fork detachable connection with a die stock,a sleeve slidably mounted in said casing,ra spring surrounding said sleeve 'within said 4casing and arranged to maintainand return said sleeve in and to its normal position, a hollow head slidablyfitted in said sleeve, atubular member comprising an aXialcontinua-tion of said head, a Spring Within said sleeve bearing against said head, means for varying the tension of said last named spring, a socket member slidable in said hollow member, a. reaming tool secured in said socket member,'a threadedstem comprising anextension of said socket member, a sleeve nut rotatably mounted in said'tubular member and in threaded engagement with said" threaded stem whereby theopera- `tive kposition lof said reaming tool on said reamer may be varied, locking levers whereby said reaming tool is secured in its operative position on said casingand `means actuated by pressure developed by the work for releasing said locking leverstov automatically adjust said reamer to an inoperag tivek position on said casing. c Y

In testimony whereof I hereunto set my hand. v

` n* GUSTAF rSAMUEL OLSON.

f co 

